3-4 pm Friday 26 October 2012

Campus Heart_N76 room 1.09

Griffith Univesity, Nathan Campus

 

Associate Prof Jacky Croke

Fluvial Geomorphologist, Australian Rivers

 

 

Abstract:

 

Understanding river form and processes is essential to the effective protection and management of these  ecosystems from a geomorphic, ecological, hydrological and engineering perspective.  River form and processes are known to vary widely in space and time. As a result, the evolution of river science has seen the emergence of a number of conceptual frameworks which have been used to characterise the ‘typical’ form and process of rivers. Examples include downstream hydraulic geometry (DHG), the river continuum concept (RCC), sediment links and more recently self-organisation and self-organised criticality (SOC). The data required to assess these frameworks is often lacking especially at the basin-scale and, as a result, our knowledge of river form and process is often a product of limited measurements and theoretical predictions.  Emerging technologies and the more routine availability of  high-resolution, remotely-sensed data such as Light Detection and Raging (LiDAR) and high resolution Digital Elevation Models (DEMs) means that geomorphology is now well-placed to populate and test some of these theories.

This seminar is a theoretical look at the form of geomorphic response which occurred during the catastrophic Locker Creek flood of January 2011. Multi-temporal LiDAR data and high resolution DEMs are used to examine the resultant form and processes of river adjustment. Specifically the seminar examines evidence for such concepts as ‘self-organisation’ and ‘non-linearity’ of river response, and concludes with some implications for river management.

Speaker:  A/Prof Jacky Croke is a fluvial geomorphologist at the Australian Rivers Institute Griffith University. Her position is part of a joint initiative between GU and Landscape Sciences within the Queensland Department of Science, Information Technology, Innovation and the Arts (DSITIA formerly DERM).


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ARI Events

Australian Rivers Institute
Griffith University
Nathan Campus
http://www.rivers.edu.au/
ari-events@griffith.edu.au

Ph. 07 3735 7681

 

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